StiffClip® JC series Steel Joist Clip connects floor joists to beams and other structural components while resisting vertical loads. Pre-drilled guide holes and a support flange streamline installation. The allowable load tables shown below are based on use of StiffClip JC attached to various joist thicknesses and yield strengths with #12 Screws. The attachment to the beam or structure must be designed to be greater than or equivalent to the joist attachment.